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孔径成像
相关语句
  aperture imaging
    to improve spectrum utilization and realize full|aperture imaging, which results in considerable computational complexity;
    提高频谱利用率,实现全孔径成像,达到理论分辨率,但多普勒分量提取以及模糊抑制的计算量过大;
短句来源
    Review on Sparse Aperture Imaging System
    稀疏孔径成像系统发展概况
短句来源
    The development of Sparse Aperture Imaging System is reviewed.
    介绍了稀疏孔径成像系统的发展现状。
短句来源
    The results is useful and have important value for some problems such as phase compensation of airborne millimeter synthetic aperture imaging system,as well as tests of flying with missiles and so on.
    研究结果对机载毫米波综合孔径成像系统的图像校正和相位补偿、机载导弹挂飞试验等具有及其重要的应用价值。
短句来源
    The focused synthetic aperture imaging processing is the available method to improve the azimuth resolution,but the operational quantity is so large that it could not accomplish in real time.
    合成孔径成像是提高图像方位向分辨率的有效方法,但算法运算量大,在机载条件下往往实时性得不到保证。
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  “孔径成像”译为未确定词的双语例句
    Study on High Resolution Overlapped Subaperture Imaging Algorithm for High Squint Airborne SAR Processing
    机载合成孔径雷达大斜视高分辨率重叠子孔径成像算法研究
短句来源
    Technical Features of the synthetic aperture radar imaging (SARI) used for UAV is presented and the critical techniques and implementation methods of ASRI in UAV are discussed in detail.
    主要介绍了无人机合成孔径雷达成像所具有的技术特点 ,较详细地讨论了无人机载合成孔径成像的关键技术及实现方法。
短句来源
    A high-resolution subaperture imaging algorithm incorporated with the correction of 2-D image geometric distortion and the compensation of spatially-variant phase error for high squint airborne synthetic aperture radar is presented.
    该文提出了一种结合图像二维几何失真校正和空变相位误差补偿的大斜视、高分辨率机载合成孔径雷达重叠子孔径成像处理方法。
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  aperture imaging
Comparison of techniques for stationary coded aperture imaging in nuclear medicine
      
The instruments include: a short-pulse radar altimeter, a wind-field scatterometer, an experimental synthetic-aperture imaging radar, a scanning multifrequency microwave radiometer, and a supporting visual and infrared radiometer.
      
They are widely agreed upon to be optimum mask patterns for coded aperture imaging, particularly in imaging systems with a cyclic coded mask.
      
Coded aperture imaging in X- and gamma-ray astronomy
      
The coded aperture imaging method is herein reviewed with emphasis on topics of mainly practical interest along with a description of already developed and forthcoming implementations.
      
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Technical Features of the synthetic aperture radar imaging (SARI) used for UAV is presented and the critical techniques and implementation methods of ASRI in UAV are discussed in detail.

主要介绍了无人机合成孔径雷达成像所具有的技术特点 ,较详细地讨论了无人机载合成孔径成像的关键技术及实现方法。

We analyzed three existing methods for improving azimuth resolution for distributed SAR system in this paper: to extend equivalent Doppler spectrum in time domain, which improves resolution while leads to spectrum overlapping and worsen results; to improve spectrum utilization and realize full|aperture imaging, which results in considerable computational complexity; to carry out spatial filtering by means of statistics and estimation, which enlarges imaging area while maintains theoretical resolution and results...

We analyzed three existing methods for improving azimuth resolution for distributed SAR system in this paper: to extend equivalent Doppler spectrum in time domain, which improves resolution while leads to spectrum overlapping and worsen results; to improve spectrum utilization and realize full|aperture imaging, which results in considerable computational complexity; to carry out spatial filtering by means of statistics and estimation, which enlarges imaging area while maintains theoretical resolution and results in amazing computational complexity for pseudo|inverse of matrix. In view of the shortcomings of these methods, we proposed a spatial frequency filtering approach to improve the synthesized spectrum to overcome them. We presented computer simulations to validate the proposed method.

分析比较了三种提高分布式合成孔径雷达方位向分辨率的方法:时域扩频,展宽等效多普勒带宽,分辨率虽有提高,但存在频谱混叠,影响成像效果;提高频谱利用率,实现全孔径成像,达到理论分辨率,但多普勒分量提取以及模糊抑制的计算量过大;利用统计分析及估计理论对成像进行空域滤波虽然扩展了清晰成像面积,但没有提高绝对分辨率,且由于矩阵的伪逆操作,计算量惊人。针对上述算法的不足,借鉴扩频思想,提出空间频率滤波方法以改善合成信号的频域特性,从而提高方位向分辨率。给出了仿真结果以说明所提出方法的有效性。

The development of Sparse Aperture Imaging System is reviewed.The emphasis is on the theory and the type of Sparse Aperture Imaging System,study development in foreign country,key technology and the application in the future.

介绍了稀疏孔径成像系统的发展现状。重点介绍了系统的成像原理和种类,国外的研究进展以及系统实现的关键技术和应用前景。

 
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